Maintenance Schedule for the 2022 Dodge Challenger

Why Your Maintenance Schedule Matters More Than Most Cars

The 2022 Challenger is not a Toyota Camry. It's a high-performance V8 (or V6) making serious power in a heavy body. Push it hard at the track, let it idle in traffic, or add performance modifications — and the factory service intervals start to look optimistic.

Here's what the factory says, what experienced owners do, and why the difference matters.

Oil Changes

Factory recommendation: Every 10,000 miles or when the OLM (Oil Life Monitor) prompts you.

What owners actually do: Every 5,000 miles with full synthetic. Period.

The OLM stretches intervals to 10,000+ miles, and this is the #1 cited factor in HEMI tick/lifter failures. Synthetic oil degrades and accumulates combustion byproducts faster in high-compression engines that run hot. The cost difference between 5,000-mile and 10,000-mile intervals is about $60–$80/year — that's cheap insurance against a $5,000 lifter job.

Oil specs:

• 5.7L: SAE 5W-20 Full Synthetic, MOPAR MS-12991 spec
• 6.4L: SAE 0W-40 Full Synthetic (Pennzoil Ultra Platinum 0W-40 is the factory-fill spec)
• 3.6L V6: SAE 5W-20 Full Synthetic

Spark Plugs

The HEMI dual-plug design uses 16 spark plugs (2 per cylinder). Stock plugs are NGK Iridium or Champion iridium — these are pre-gapped from the factory and should not be regapped.

Factory interval: 30,000 miles

Track/aggressive use: 20,000–25,000 miles

Replacement cost at a shop is typically $200–$350 for all 16 plugs and labor. DIY is straightforward but requires removing the intake manifold on some cylinders — budget 3–4 hours your first time. Use NGK 6619 (LFR6AIX-11) or the Mopar OEM equivalent.

Air Filter

Factory interval: Inspect at every oil change, replace every 30,000 miles

With a drop-in performance filter (K&N, S&B): Clean and re-oil every 50,000 miles per filter instructions

If you have a cold air intake, follow the filter manufacturer's service schedule.

Transmission Service

Automatic (TorqueFlite 8HP70):

• Factory says "lifetime fluid" — experienced owners disagree
• Drain and fill every 30,000–40,000 miles with ATF+4
• If you track the car or do hard launches, do it every 20,000 miles

Manual (Tremec TR-6060 6-speed):

• Factory recommendation: 45,000 miles
• Track use: 20,000–25,000 miles
• Use Mopar MTF or equivalent GL-4 gear oil

Differential Fluid

Often forgotten, critically important on a car with this much torque.

• Rear diff: Drain and fill every 30,000 miles. Use Mopar 75W-140 or equivalent synthetic gear oil
• If you do burnouts or track days: Every 15,000 miles
• The rear axle seals can also weep — inspect for leaks at each oil change

Brake Fluid

Factory interval: Inspect annually, flush every 3 years

Track/autocross use: Flush before every track day

Brake fluid is hygroscopic — it absorbs moisture over time, lowering its boiling point. On a stock street car this matters less. On a car that does track days, stale fluid can boil under heavy braking and cause a spongy pedal or complete brake fade. Use DOT 4 or DOT 5.1 for track use.

Coolant

Factory interval: 10 years or 150,000 miles for the HOAT (Hybrid Organic Acid Technology) coolant

Practical recommendation: Flush every 5 years

The 2022 Challenger uses MOPAR OAT (orange) coolant. Never mix orange and green coolant — drain fully and flush before refilling with a different type.

Belt and Hose Inspection

The 2022 Challenger uses a serpentine belt with an automatic tensioner. Inspect at every major service (30,000 miles) for cracking, glazing, or fraying. No timing belt — the HEMI uses a timing chain that is not a service item under normal conditions.

Summary Table

| Item | Factory Interval | Owner Recommendation |

|------|-----------------|---------------------|

| Engine oil | 10,000 mi / OLM | 5,000 mi |

| Spark plugs | 30,000 mi | 20,000–25,000 mi (track) |

| Air filter | 30,000 mi | Per filter instructions |

| Auto trans fluid | "Lifetime" | 30,000 mi |

| Manual trans fluid | 45,000 mi | 20,000 mi (track) |

| Rear diff fluid | 30,000 mi | 15,000 mi (track) |

| Brake fluid | 3 years | Before every track day |

| Coolant | 10 years | 5 years |

Following this schedule adds maybe $200/year in extra service costs but dramatically reduces the risk of expensive failures on a car that begs to be driven hard.